Printing-telegraph



1.. t e e h s s t e e h s 8 K C I S S E V QM (No Model.)

PRINTING TELEGRAP'H.

No. 365,059. Patented June 21, 1887.

Ei lm! N4 PETiRs, Phaxo-umogmphr, wamingm, n. cA

(No Model.) 8 Sheets-Sheet 2.

S. V. ESSIGK.

PRINTING T'BLBGRAPH.

No. 365,05@ e 21,1887.

./IlLJfJIfI/F 113.1-

W P-QRJ U WXYZ (No Model.) 8 Sheets-Sheet 3.

` s. V. BSSICK.

PRINTING TELEGRAEH.

Patented June 21, 1887.

w W] v ..|.....%W1

N. PETERS. Pham-Lnrmgmphu. wnsnmgw (No Model.) 8 Sheets-Sheet 4. S. V. ESSICK.

PRINTING TELEGRAPH. No. 365,059. Patented lune 21, 1887.

8 Sheets-Sheet 5.

(No Model.)

S. V. ESSICK.

PRINTING TELBGRAPH.

No. 865,059. Patented June 21, 1887.

(No Model.) 8 Sheets-Sheet 6. S. V. BSSICK. PRINTING TELEGRAPH.

Patented June 21, 1887.

N. PETKRS, Phnwmlmwher, washmgmn. D. c.

(No Model.) 8 Sheets-Sheet 7.

s. v. BSSIGK.

PRINTING TELBGRAPH.

N0. 365.059. Patented June 21, 1887.

of, o1 4,9 o-

(No Model.) 8 Sheets-Sheet 8.

S. V. BSSIOK. PMNTING TELEGRAPH.-

No. 365,059. Patented June 21,1887.

WLM/wow@ ilNiTnD STATss PATENT rtree.

SAMUEL V. FSSICK, OF ALLIANCE, OHIO.

PRlNTlNG-TELEGRAPH.

BPECIPICATION forming part of Letters Patent No. 365,059, dated June 21, 1887.

Application filed Srptcmhcrf\`, ISST).

To @ZZ whom, it may concern.-

Bc it known that I, SAMUEL V. Essrok, a citizen of the United States, residing at Alliance, in the county of Stark and State of Ohio, have invented new and useful Improvements in Printing-Telegraphs, of which the follow ing is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specitication.

My invention relates to certain improvements in printing-telegraphs, and more especially to that form of printing-telegraph t'or which I obtained Letters Patent bearing date June 19, 1883, and which are numbered 279,550; and my present improvements have reference particularly to a new form ot' com mutator, by which, with cach alternate impulse, I reverse the currents on the line and thereby effect a more perfect discharge ot' the line with each impulse, and dispensewith the necessity of a eommnlator for the receiver; also to an improvement ofthe feed and shipping device of the paper-carriage, by means of which a better action is secured.

vUy present improvements also relate to a means for increasing the speed ot' the said instruments by dividing the alphabet, spaces, Ste., on the periphery of the type-wheel into two rows instead of one, as shown in my original patent, and by means of which, with the other parts connected with the same, only onehalt the vibrations ot' the pallets of the commntator and transmitter are required to revolve the circuit-breaking arm of the transmitter and type-wheel of the receiver, which are required to revolve the same, as shown in my original patent, referred to above; and my present improvements also further relate to a means of breaking the circuit at one point while it is completed at another, by depressing a key, and causing the circuit to remain broken until the key is released and allowed to return toits normal position, thus securing ease of operation. l

In the accompanying drawings, Figure l is a top view of the working portion of the transmitter, showing the eseapement-magnets and the commutator. Fig. 2 is a side elevation of the same. Fig. 3 is an end elevation of thc commutator. Fig. lt is a top viewshowing the levers of the key-board, the make-andbreak cross -levcrs n. and i), and the make and Serial No. 178,323. (No mulch) break springs c, (l, c, j, and g. Fig. 4" is a detached view ol' the upper end of one ofthe. pins Il.. Fig. 4l is a detached view showing the contact-points m n. between the bar a and the body ol` the transmittiiig-instrument. Fig. 5 is a side elevation, and Fig. 6 a top view, of the receiver. Fig. 7 is a side elevation ofthe paperrarriagc with its connections and the type-wheel. Fig. S is a side view ofthe typewheel. Fig. 9 is an edge view ot' the type wheel. Fig. 1t) is a top view ofthe paper-can riage with its connections. Fig. ll. is a diagram showing the connection of the transmitter and receiver and the relation of cach to the other. Fig. l2 is a similar view showing more in detail the transmitter-circuits, and Fig. 13 is a vertical section through the trans mitter, showing one ot" the transmitting-keys and its connections. Fig. 1S" is a detached view illustrating the operative position of one of the pins h relative to the corresponding make-aml-break lever K2. Fig. 14 is a detached view showing the contact-points between the springs c d of the transmitter. Fig. l5 is a detached view of a modified arrangement ofthe type-carrying devices.

A is the baseplate ot' the working part ot' the transmitter, above which are supported in the order named plates B, C, and D. Plate A is provided with a circular series of perforaA tions to receive the lower ends of pins 7L,which said lower ends project below the plate and rest each upon the rear end of one of thekeylevers. rlhc upper ends of these pins h project through perforations in plate B, theplates being` arranged such distance apart as to admit of the slight vertical play of pins 71. upon depressing the keys. Between plates B and D are journalcd in a circular series spindles t', each carrying a circuit-breaking lever, K2. The plate or piece O is a metallic ring interposed between plates B and D and insulated from the other parts ot' the transmitter, but connected with the line-magnets by suitable wire. This ring C cncircles the circular series ot' pins It and spindles t', and is provided near its outer edge with contact-serewsj, one for each lever K2, the periphery of said ring C being fitted with a band of hard rubber, upon which the outer ends of levers K2 normally rest. rlhc levers K2 are free to move laterally within certain limits, either into or out of contact with their respective contactscreWs j. Normally they are out of contact therewith, but are moved into contact through the medium of the pins h whenever the keylevers are depressed. They are driven back to their first position by a circuit-breaking arm, K', which is fixed to a' shaft, l), having its bearings in the lower plate, A, and in a bracket attached to the upper plate. On the same shaft are also fixed a toothed wheel, a, and a pinion, q. The former acts in connection with a pallet, m, to form an escapement for operating the circuit-breaking arm K. The latter is connected with atrain of clock-work, by means of which the shaft P and its connections are driven, the said clock-work being actuated by a weight or spring.

The pallet m is formed on or secured to an extension of an armature which plays between the, electro-magnets E and F. These magnets are supported upon brackets c3 e, and are made adjustable with relation to their armature by means of nuts g4 g5 and screws f" f1. The magnets are polarized, preferaby by means of a local battery, as shown. They may, however, be polarized in the ordinary way by means of strong permanent magnets. Upon each core of said magnets is wound two coils. At the end vnearest the armature of the pallet is wounda coil of high resistance-a g., from one hundred and fifty to two hundred This coil is connected with the line, and through it the'line-currentA passes. At the rear end of each of said cores is wound a coil of low resistance-0. g., about two ohnns and this coil is connected with a local battery of about three or four volts. The line-coil of one magnet is connected vwith the line-coill of the other. So, also, the polarizing coil of one magnet is preferably connected with the polarizing-coil ofthe other, and when thus connected the said polarizingcoils are so wound or coupled that the current passes in one direction through the coils of one magnet and in the opposite direction through the coils of the opposite magnet, so that when the line-current is sent in one direction through the linecoils one magnet is increased in strength, because it circulates in the same direction as the current of the local battery through the polarizing-coil of the said magnet, while the strength of the other magnet is neutralized,

because the line-current flows in a direction opposite to that of the local current as it passes through the polarizing-coil of the said other magnet, and thus the alternating currents which aresent through the line and through said line-coil by means of the commutator hereinafter described, give force to one and neutralize the force of the other alternately, and thus impart vibratory motions,through the armaturel of magnets E F, to the pallet m.

Vhen the instrument is not in use,the pallet m acts as a detent tothe clockwork and keeps it from rotation. As soon, lhowever,as

a key isdepressed and the line-circuit closed the commutator above referred to begins to l shaft.

act and the pallet m is vibrated, allowing the toothed wheel a to advance the distance of one tooth at each half-vibration in a manner well understood. The commutator is supported upon a bracket, H, which is mounted on the plate D. A piece of hard rubber, G, is secured to the bracket H for insulating from each other various parts of the cominutator.

rllhe chief operating parts of the commutator, electrically considered, are the p arts 1' and s,which are mounted on a transverse shaft of the coinmutator,but in such a manner as to be insulated from cach other by vway of the The parts yrand s have each two points, c cl' and e j", respectively, which connect through corresponding points with the screws o x and w y, and through said screws,by means of wires, with the line-coils of the magnets E F, and thence with the line. The line-circuit is connected on one side, as shown in Fig. 1, withvthe vibrating part 1- by means of a bind-v ing-screw, r', and a [ine wire, r2, and it is similarly connected on the other side with the vibrating part s. The line-wires running from the commutator being joined to the bindingscrews u and w, it is evident that the current from the line-battery will pass directly out to line from the vibrating parts 1" and s through .the line binding-screws,when the points c and ethereof rest upon their corresponding points; but when the points d' andf rest upon their corresponding points, which latter are connected with the bindingscrews m and y, there is no such direct connection with the line,and the only passage for the current is froml screwy to o and ironi screw m to w, by way ofthe cross'- wires shown in dotted lines in Fig. 1. This will send the current to line in an opposite direction.

' In order to send alternating currents to line for causing, among other things, the vibration of the pallet m, through the action of the mag nets E F, it is only necessary to cause successive reversals of the vibrating parts 1" and s. This is accomplished automatically through the operation of the pallet. A shaft, a', is connected at one end with the pallet m and at the other with the vertical lever z, and near the pivoted shaft of said lever, so that the upper end thereof receives extended motion by means of a limited motion of the pallet. As

this lever is moved backward and forward it strikes alternately upon the insulating-pins c2 c3 and the similar pins, t2 t, one of each of these pairs of pins being connected with T- shaped downward extensions of the vibrating parts r and s. These extensions are notched at their lower ends, and conical-shaped joints or pivoted pins g 7L arepressed into the notches by means of the insulated springs ta, secured to the plate D. The office of the -springs and jointsis to press the points of the vibrating partsti ghtl y against their corresponding points in either position of the vibrating parts. It will be seen that the reversed positions of the lever z determine which pair of the points shall be .thrown into contact with the corre;y

IIO

spending pair, and the polarity of the magnets E F, due to a reversal of the contacts through the lever ,ft/,will always be such as to cause the said lever to be moved back in the opposite direction. In this way, so long as the line-circuit is closed, there will be a rapid change of the polarity in the magnets E F and a consequent rapid vibration of the pallet m.

a is an angular lever, which is pivotcd at the points 7u and Z', and which lies directly across the key-levers. The said lever c has a platinum point, m', which rests upon the point n', when said lever is in its normal position, and thereby completes the circuit at that point; but when said lever is elevated by depressing one of the keys of the transmitter (and thus elevating the said lever) the circuit is broken at the point ma', and remains thus broken until the said key is released and the said lever is allowed to drop to its normal position. The object of this device is to render the act of transmitting easier, and to prevent the key which has been depressed from intertering with the parts which are actuated by the current which is brought into action by the depressing of the key. If this break in the circuit did not occur, and if'the circuit were complete at all points immediately on the depressing of a key, the current would at once actuate the machinery and the circuitbreaking arm K might reach the circuit-connecting lever K2 just acted on, and before the removal of the linger and the return of the key and its lever and pin 7L to their normal position, and the said circuit-connecting lever 1r2 being held firmly, the said circuit-breaking arm could not act upon it, and the circuit would not be broken at the proper point, and the transmitter and receiver would thus be thrown out of unison; but by breaking the circuit at the points m a the current does not act until said key with its connections return to their normal position, thus releasing all interference with the action of said circuitbreaking arm K and circuit-connecting lever IW.

The object of breaking the linecircuit by the action of the arm K will be explained hereinafter.

In the transmitting-instrunient in which I have embodied this part of my invention, ai

ai* are the binding-posts for the line-battery, the former being connected directly with the bar a, and theneethrough the platinum points m a, by a suitable wire, with the vibrating part s, and the latter with the vibrating part 1'. The circuit of the instrument is best illustrated in Fig. 12, and may be traced as follows: from binding-post a to vibrating part r and screw U, thence to aspring, c, which makes contact with a point, 5, the latter being connected by a wire with the binding-post 11', and thence to liuc. The single arrows on the drawings indicate the normal course ol the current. Returning, the line-circuit enters at binding-post b and passes to the line-coils of magnet F, and from there to the plate C, still following the course indicated by the single arrows.

It will be rememberedthat there is a series of screws, j, fixed in the plate C, and that thc arms K2 are brought into contact with said screws when the key-levers are depressed. Vhcnever, then, any one ofthe said levers has been pushed down, electrical connection will bemade between the plate C and some one of the arms IW, and through one of the spindles 7L this con neetion will be continued to the frame ofthe apparatus in which the said spindles are mounted. The frame is itself connected by a wire with theline-eoil ofthe other magnet, E, from which it passes to the spring f, and through the contact thereof to the binding-screw w, whence it returns to battery by the course al-. ready described, provided contact exists between the points m and u. It will be seen that by this arrangement the break or opening between any one of the screws j and the corresponding arm KL is located in the loop which connects the two parts ol` the polarizing line-coils. i

rlhe circuit above traced is the one that has most to do in the working of the apparatus. As will be hereinafter explained, however, it becomes necessary to the proper operation of the type-wheel of my receiver to send a stronger current to line, and I accomplish this by cutting out the high-resistance line-coils. By reference to Fig. 1l it will be seen that I provide two rows or banks of keys representing the dit'l'erent letters ofthe alphabet. It has already been stated that thc crosslever u lies across the key-levers and is operated whcnever akey is depressed. Besides this lever, a second cross-lever, b, is arranged to lie across the said levers in such a way as to be operated by the depression of any one of the upper or secondary set of keys, but to be unalected by the movements of a primary key. The cross lever b carries at its outer free end insulated contact-points 5 and 6, which normally connect with points on the ends of the spring c andf. It also carries insulated contact-points 7, S, and 9, which are normally out of contact with corresponding points on springs d, c, and g. Vhen the lever is operated by the depression of one of the secondary keys, the original contacts are broken and the others are made, whereby a shunt-circuit cutting out the linemagnets is formed as follows, (see Fig. 12,)thc shunt-circuit being indicated by the double an rows: From binding-post a2 the circuit goes to spring d and by wire to vibrating part s. From there it passes through contact-point S and spring c to the bindingpost biand to liuc. Returning, it goes from binding` post b2 lo spring y, to screw o, to vibrating part r, and back to binding-post a2 and to battery.

The circuit enters the receiver by way of the coils Mof the relay 1, and passes through the relay 2 and the line-magnets 19 2O of the receiver and back to line. The oflice ol" the the printing-magnet R.

l OO

IIS

l is made with long cores to prevent their discharging too rapidly, so that during the rapid impulses on the line-circuit, due to the action of the transmitter-commutator, the armature S is held constantly in proximity to the ends of the said core without vibrating back and forth. Vhen a key of the transmitter is depressed and released, and the line-circuit thus completed, the relay 1 attracts its armature and holds it attracted until the line-circuit is broken at thetransmitter through the action of the circuit-breaking arm K. Connected with the armature of the relay is a lever, t', and `an L-shapcd screw, q', the point of the latter being normallyin contact with mercury in a cup, r3. The circuit of the magnet R passes through the mercury and the screw and is broken when the point of the latter is withdrawn from the cup by the attraction of the armature S and restored when the armature falls back.

The relay 2 is provided with an armature, 10, and an armaturelcver, 16, which is norniaily held retracted by a spring, 13, the adjustment being such that the armature will be attracted only by a current of greater strength than the ordinary currents. Then it is so attracted, the lever 16 is brought against the point of a contactscrew, 12, closing the circuit of a local battery (which may be the local printing-battery) through vthe magnet 14, for a purpose to be explained hereinafter. The magnets 19 20 of the receiver act in the saine manner and at the same time as the magnets E F of the transmitter, and serve to control an escapement, by means of which the shaft that operates the printing-wheel is moved in perfect unison with the shaft P of the transmitter. The said magnets are also similarly wound, and they are polarized in like manner by a local battery.

The general operation of the receiver-magnets being thus set forth in advance, the apparatus comprising my receiver as a whole will now be described in detail. A.

A2 B2 Cl represent the three upright parallei plates ofl the receiver, connected by suitable cross bars or tics, as shown. On the inner side of the plates A2 and B? two horizontal bars, l l, are fixed, forming a track or way on which is mounted a reciprocating frame, K, which with its rollers carries the paper upon which the message is to be printed. VFirinly attached to the one side of this fralneK is the toothed rack J. Connected with the plates A! and BZ are the upright brackets L L2, which form supports forthe journals of the shaft M. Upon this shaft M is firmly fixed the pendent lever` N, and upon this pendent lever N is firmly xed the armature O, and is also pivoted the cam-pointed lever l and the angular pawl G'. This pendent lever N is actuated by means of the magnet R, which acts upon the armature O, and the said lever is retracted by means of the spring S. Then the said lever N is moved in the direction of the magnet R by the attraction of the same,

(induced by the circulation of a current'from a local battery through the coil of said magnet,) it carries with it said angular pawl G the distance occupied by one ofthe notchesof the toothed rack J. NVhen the V-shapcd pin o drops into one of the notches of said rack, and

when the said local current ceases and the magnet loses its attraction, the retractingspring S takes effect upon said pendent level', retracting said lever and carrying with it said angular pawl G, and with it moves the papercarriage, to which the rack J is firmly attached, the distance of the length of one of the teeth of said rack. The said lever N being limited in both 4its forward and backward motion, it moves only far enough in the direction of the magnet R to allow the pin 0 to drop between the teeth of the rack J; and when the said lever N is retracted to its rear limit it moves-the said rack J and paper-carriage the distance of one tooth of said frack, when the pin Q of the detent T drops in one of the. notches of said rack J and holds said rack and papercarriage in position until said pawl G is again brought forward to feed the said paper-carriage the distance of another tooth. Thus the said papercarriage is moved along, one tooth at a time, until the curved stand-` ard Ustrikes the cam-pointed lever P and moves said lever forward, causing it to lock with the pawl G', and causing said pawl and lever to become rigid with the pendent lever N. Then the next forward motion of said lever N causes the said pawl to be lifted out of the notch which it occupied in the rack J, and as the end of the detent T overlaps the pin o ofthe pawl G the said detent is at the same instant elevated, so as to'clear the notches of said rack J, and the said rack and paper-can. riage are then brought back to the point for starting a new line on the paper by means of the cord X and weight W. When said carl riage has dropped back its full limit, the

standard V strikes the lever P" and drives it from its rigid connection with the pawl G', and allows the pin o of the pawl G to dropl betweent'he notches of said rack in position for again feeding said paper-carriage along. Firmly fixed upon the said shaft M is also the lever Y,whieh is connected with the printinglever ol by means of the coupling o3. At the forward end of said printing-lever is the printing-pad 15. This printing device is operated in connection with the feed of the paper-carriage in the following manner: lfhen` a key of the transmitter is actuated, the circuit of coil R is broken in the manner above described and its armature is released. This allows the spring S to retract the pendent lever N, and with it the lever Y and the other connections of the shaft M. When this action occurs, the pawl G' being pivoted, as above described, to the lever N, and the pin 0 of said pawl being in a notch of the rack J, the said paper-carriage is moved the distance of one notch, and when the line-current ceases the point of the screw ,q drops into the mercury IIS eup r3, and thereby completes the local eiicuit of the printing-magnet R, and causes said magnet to act upon the armature O, which thereby causes the printing-pad 15 to press the paper against the proper letter of the typewheel.

The characters and spaces upon the typewheel I ofniy receivi ng-instrunient are divided into two parallel rows surrounding theperiphery of said wheel; and said characters and spaces are so arranged that they stand in pairs across the periphery of the said wheel. The said type-wheel is firmly fixed upon the shaft M and turns with said shaft as the same is allowed to revolve by the vibrations of the armature operating the escapement O. Vith each vibration of the pallet of said escapement, ieleasing one of the teeth of the wheel H, the said type-wheel carries to a fixed peint two 'of the characters on the periphery ot' said wheel. rlhe row V2, as shown in Figs. 9 and 10, stands in the normal or primary position, where it is held by the spring 3.

The shaft M has both a lateral and circular motion, the shoulders of said shaft being such distance apart with reference to the sides of the bearings of the pivots of said shaft as to allow the said shaft to move laterally such distance that the secondary row "W2 may be moved so as to occupy the position of the row Y2 of the characters, Ste., of said type-wheel.'

The two sets of transmitter-keys spoken of as primary and secondary correspond to the rows oftheletters, characters, &e., of the typewheel of the receiver.

Vhen a primary key is depressed by the op erator and theline-circuit completed, the eurrent passes from one pole of the battery through the commutator ofthe transmitter,and through the magnets of said transmitter to the line,and thence through all the coils of the receiver and its relays (except the polarizing-coils) back through the commutator to the other pole of the battery when moving in one direction, and when moving in the reverse direction the cu rrent passes first through the cominutator to the receiver, thence through the coils of the receiver and relays back to the coils ofthe transmitter, and thence out through the commutator to the other pole of the battery. Vith each vibration of the pallet of the transmitter and corresponding` vibration of the vertical lever e and vibrating parts fr s the current is reversed, first moving in one direction and then alternating in the opposite direction. As the said impulses of the current are thus alternated, first in one direction and then in the opposite direction, the pallets of the transmitter and receiver are operated in unison, so that as one tooth of the wheel a ofthe transmitter is allowed to escape a corresponding tooth of the wheel H2 in the receiver is allowed to escape, because the lineeurrent operates both pallets at the same instant. Thus two characters on the type-wheel are moved toaposition in which one character of the primary row stands immediately' over the printing-pad 15 in postionto receive the impression of said pad. New, when one of the keys of the secondary set is depressed, the cross-lever b is elevated, and at the saine instant the points 5 and 6, which connect with the points of the springs c and f, are disconnected with the points of said springs and the points 7 8 9 are brought lntO contact with the points of the springs d 0 .f/- By this means the magnets E F oi the transmitter are switched out ofthe line and the current sent directly to the relays and magnets of the receiver. rlhe magnets E F of the transmitter being of high resistance when they are switched out of the line, a current of much greater strength is sent through a relay, 2, which aetuates the armature 10 and the lever 1 6, bringing the connecting-point of said lever 16 against the connecting-point of the screw 12. 'Vhen the said points of the lever 16 and screw 12 are brought into contact, being in circuit with the battery which does the printing, or some other local battery, a current is thereby sent through the magnet 14, and the armature ot' said magnet 14 being thus acted on, the upper end ef the vertical lever 18 is thereby brought forward, carrying with it the shaft M with its type-wheel and other connections, and pressing outward the spring 3 until the secondary row of characters on the type-wheel stands in the position, laterally, immediately before occupied by the primary row of characters. Thus, suppose the letters A and B to stand in a line across the periphery of the wheel, letter A standing in the line V and letter B standing in the line NVZ, or, to express it otherwise, letter A being in the primary row and letter B in the secondary row, when a key, A, of the primary, set as `above described, is depressed, the letter A of said primary row is brought immediately over the printingpad in position for the paper to receive the impression of A; but when a key, B, of the secondary set is depressed the pallet 02 of the escapement of the receiver operates the same number of times, so as to bring letter A into position for being printed; but a stiong eur rent having been sent through the magnet of relay 2, and the magnet 14c being brought into the circuit of the abovedeseribed local battery, the said secondary row of letters on the type-wheel is thrown into the position ofthe said primary row, so that when the vibrations of the pallet oZ take place, which would priinarily have brought letter A into position to be printed upon the paper, the said shaft being locked in its said secondary position by means of the latch 17,1ctterl3, being immediately opposite letter A, will stand in position over said printing-pad 15, and the said letter B will therefore be imprinted upon the paper. Thus each letter of the alphabet is printed, the process being according to the set or row each may belong to; and by this means the pallets of the transmitter and receiver operate only one-half the number of times to bring each letter into position that would be required to bring any particular letter into po- IOS IIO

5 and by the same operation of the magnet R upon the armature O-the projection 1?', which 1s rmly attached to the pendent lever N, strikes the latch 17 and releases the lever 18 and allows said lever 18, with the type-wheel 1o I', to be driven back to their normal position by means of the spring 3.

Instead of a single type-wheel with the alphabet divided and arranged in two rows around'the same, two wheels maybe formed,

15 each having a row of letters on its periphery corresponding with a row of letters on the above-described single wheel, and the said wheels placed upon a single shaft a suitable distance each from theV other, so as to form 2o parallel rows corresponding with the rows upon the single wheel, as above described;

As each successive letter is printed in the manner above described, the paper-carriage with the paper which receives theimpression 25 is fed along the distance of a letter, and a proper space for separating the letters, by the process above described, until the standard U strikes the lever Pand locks it with the pawl Gr', when said carriage drops back in the manner described, for the beginning of a new line. It is of course understood that the short clrcuit caused by the depression of one of the secondary keys is maintained only while the s aid key is held down, and that its whole function 1s to cause a powerful current to be sent to line forshifting the type-wheel through the action of the magnet 14. After this has been accomplished and the secondary key released, the current passes through the line-magnets of both the receiver and transmitter and operates their escapenients in unison, as above described.

What I claim as my invention, and desire to secure by Letters Patent, is-` 1. In a coinmutator for printing-telegraphs, the combination, with the vibrating parts or arms 1" s, having the Tshaped extensions, the springs having a flexible connection with said extensions, and the pins c2 c3 i2 t3, of the lever z with its actuating mechanism, as and for the purpose set forth.

2. In acommutator for printing-telegraphs, a vibrating part or arm having acontact-point at or near each end and a Tshaped extension provided with a pair of pins or projections, a spring having a flexible connection with said extension, and a lever located between the said pins for operating the vibrating arm, said lever being connected with the armature of the electro-magnet, substantially as set forth.

3. In a commutator for printing-telegraphs, d a pair of vibrating arms located in the eir- .cuit of a line-battery, each having a'contactpoint at or near each end, and each having a Tshaped extension provided with a pair of pins or projections located opposite each other, as shown, and a spring iiexibly connected with `said extension, in -combination'with a'lever located between the said pins for operating the arms, the said lever being connected with the armature of a polarized magnet, substantially as set forth. Y

4. In aprinting-telegraphdhe combination, with the magnets E F, located in the line-circuit, theV commutator operatively connected with the armatureiof the said magnets, the pallet m, andthe escapement-wheel a at a transmittingstation, of the magnets 19 20, the pallet o2, the escapement-wheel H2 at a receiving-station, and a pair of relays located in the circuits of said magnets, substantially as and for the purposes set forth.

5. In a printing-telegraph,the combination,`

with an electric generator, .of the magnets E F in the circuits thereof, the commutator operatively connected with the armature of the said magnets, the pallet m, the escapementwheel a, and the circuit-breaking arm Kat a transmitting-station, and the magnets 19 20, the pallet o2, the escapement-wheel H2, and the shaft carrying the type-wheel I at a receiving-station, substantially as and for the purposes set forth.

6. The combination, with an electric generator, of the magnets E F in the circuit thereof, the commutator operatively connected with the armature of the said magnets, the transmitting-keys, the make-and-break levers K2, the circuit-closing arm KI, and the escapement m n at a transmitting-station, and-the magnets 19 20 and the escapement O2 H2 at a receivingstation, substantially as and for the purposes set forth.

7. In a printing-telegraph, the keys of a transmitter, an angular lever, a, lying across said keys or their extensions and having conl tact-points m a in the line-circuit, an angular lever, b, also lying across said keys and having the points 5, 6, 7, 8, and 9, insulated from each other and connecting with the springs c, d, e, f, and g, a battery, and the relay 2, substantially as described.

8. In a printing-telegraph, the combination of the angular lever b, with its connectingpoints at 5 6 7 8 9, insulated each from the others, the springs c d e f g, with Vtheir connecting-points, a line-circuit', a battery, the keys of the, transmitter, the relay 2, located within said line-circuit and forming contact ina local circuit, the magnet 14, and the lever 18, substantially as described.

9. In a printing-telegraph, the combination of the angular-lever b, with its connectingpoints 5 6 7 8 9,insulated each from the others, the springs c cl e f g, with their connectingpoints, a line-circuit, a battery, the keys of the transmitter, the com'mutator ofthe transmitter and its actuating mechanism, the relay 2, located within the line-circuit and making and breaking a local circuit, the magnet 14, the lever 18, the escapementsm n of the transmitter and O2 H2 of the receiver, and the actu- 4ating mechanism of said escapements, theA type-wheel I, and the printing-pad 15 and its ICO IIO

described.

SAMUEL V. ESSIGK.

actuating mechanism, scribed.

l0. The combination of the magnet R,placed within a local circuit, the armature 0, the lever N, spring s, pawl G, locking-lever P', rack J, and standards U V, substantially as substantially as de-l l1. The combination of the relay 1, having its magnet located in the line-circuit and having make-and -break points at t2, with the magnet R, placed within a local circuit, the armature O, the lever N, spring s, pawl G',

Vitnesses:

SIMON JOHNSON, DAVID FORDING. 

